caliper/rotor questions... - The 1947 - Present Chevrolet & GMC Truck Message Board Network

ChadW · 08-12-2019, 11:29 AM

putting together a project that i bought that had a bunch of pieces with it. It is a 66 and has CPP drop spindles. I am needing to replace the rotors that came with it as they have rusted from sitting and pitted etc.. On the rotor, there is a number stamped, "PT27K9" How do i find out what rotors i need or can use? It will be a disc/drum setup. I will need to pickup calipers etc as well so i am trying to figure out what year(s)/model i need to be looking at in the parts stores...any help appreciated..

chevy_mike · 08-12-2019, 11:41 AM

Are they 5 lug or 6 lug rotors? 5 lug you can buy any 1.25" thick C10 from '73-'87 (around '80 they offered a 1" version, you want the 1.25" thick ones). If they are 6 lug, you will have to buy them from a vendor like Classic Enterprise, CPP and such as GM never offered that era C10 in 6 lug and they are custom made for the vendors.

As for calipers, again any '73-'87 ones for the 1.25" thick rotors. These are commonly known as D52 style calipers. They do not matter if 5 or 6 lug rotors.

ChadW · 08-12-2019, 11:52 AM

Quote:

Originally Posted by chevy_mike

Are they 5 lug or 6 lug rotors? 5 lug you can buy any 1.25" thick C10 from '73-'87 (around '80 they offered a 1" version, you want the 1.25" thick ones). If they are 6 lug, you will have to buy them from a vendor like Classic Enterprise, CPP and such as GM never offered that era C10 in 6 lug and they are custom made for the vendors.

As for calipers, again any '73-'87 ones for the 1.25" thick rotors. These are commonly known as D52 style calipers. They do not matter if 5 or 6 lug rotors.

Sorry..should have included that info...I am running 5 lug...so 73-87 1.25" rotors it is...TKS!

chevy_mike · 08-12-2019, 03:31 PM

Quote:

Originally Posted by ChadW

Sorry..should have included that info...I am running 5 lug...so 73-87 1.25" rotors it is...TKS!

Yep, everything will be off the shelf then.

**The Rocknrod** · 08-12-2019, 04:28 PM

Interesting, when I google Brake Rotor PT27K9 I get Ford Ranger rotors all over the place.

ChadW · 08-12-2019, 10:23 PM

Quote:

Originally Posted by The Rocknrod

Interesting, when I google Brake Rotor PT27K9 I get Ford Ranger rotors all over the place.

Yea..me too..it’s very odd

forestb · 08-19-2019, 04:20 PM

Can't you call cpp?

08-12-2019, 11:29 AM	#1
ChadW Registered User Join Date: Jan 2018 Location: Danville, IL Posts: 160	caliper/rotor questions... putting together a project that i bought that had a bunch of pieces with it. It is a 66 and has CPP drop spindles. I am needing to replace the rotors that came with it as they have rusted from sitting and pitted etc.. On the rotor, there is a number stamped, "PT27K9" How do i find out what rotors i need or can use? It will be a disc/drum setup. I will need to pickup calipers etc as well so i am trying to figure out what year(s)/model i need to be looking at in the parts stores...any help appreciated..

08-12-2019, 11:41 AM	#2
chevy_mike Never Ending Projects Join Date: Jul 2006 Location: San Diego, CA Posts: 3,836	Re: caliper/rotor questions... Are they 5 lug or 6 lug rotors? 5 lug you can buy any 1.25" thick C10 from '73-'87 (around '80 they offered a 1" version, you want the 1.25" thick ones). If they are 6 lug, you will have to buy them from a vendor like Classic Enterprise, CPP and such as GM never offered that era C10 in 6 lug and they are custom made for the vendors. As for calipers, again any '73-'87 ones for the 1.25" thick rotors. These are commonly known as D52 style calipers. They do not matter if 5 or 6 lug rotors. __________________ . 1965 C10 Panel, Tiki Express http://www.67-72chevytrucks.com/vboa...d.php?t=506580 SOLD 1968 Chevy C10, Long, Fleetside, Hot Rod Hauler http://67-72chevytrucks.com/vboard/s...d.php?t=313233 SOLD 1965 Chevy C10, Long, Fleetside, Hot Rod C10 http://67-72chevytrucks.com/vboard/s...d.php?t=415702 SOLD We were given two ears and one mouth for a reason... listen twice as much and speak half as often...

08-12-2019, 04:28 PM	#5
The Rocknrod Moderator Join Date: Aug 2011 Location: China Spring, TX Posts: 7,280	Re: caliper/rotor questions... Interesting, when I google Brake Rotor PT27K9 I get Ford Ranger rotors all over the place. __________________ Master Chief, US Navy, Retired 1964 C10 Step-side Short Bed - In Progress 2009 2500HD Duramax LTZ 1948 GMC Panel 1956 Big Window Stepside 1953 5 Window Chevy Stepside 1932 Coupe New Seat Foam for Bench Seats?

08-19-2019, 04:20 PM	#7
forestb Registered User Join Date: Jan 2009 Location: Burbank, CA Posts: 3,619	Re: caliper/rotor questions... Can't you call cpp?

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